THE IGNITION RISK WITH MIXTURES OF OXYGEN AND NITROUS OXIDE WITH HALOTHANE

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Abstract
To enable the effect of pressure on the flammability of halothane with oxygen and with mixtures of oxygen and nitrous oxide to be studied, the work at atmospheric pressure already reported in the literature has been extended to find the effect of different types of ignition sources. Particular attention has been paid to those types of ignition most likely to be present when halothane is in use, such as the cautery and the diathermy knife. The results indicate that even with the most flammable mixtures there is no risk of ignition provided the concentrations of halothane recommended for use are not gready exceeded. Further work designed to determine the limiting conditions more precisely will be reported at a later date.

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